Hose-nozzle.



No. 771,350, PATENTBD OCT. 4, 1904. F. J. GHRISTMAN.

HOSE NOZZLE.

APPLICATION FILED DBO. 7, 190s. No MODEL.

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UNITED STATES Patented October 4, 1904,

PATENT GEEICE.

HOSE-NOZZLE.

SPECIFICATION forming part of Letters Patent No. 771,350, dated October 4:, 1904. Application filed December '7, 1903. Serial No. 184,017. (No model.)

To (all whom, it nzaygconcern:

Be it known that I, FRANK J. QHRISTMAN, a citizen of the United States, and a resident of Syracuse, in the county of Onondaga, in the State of New York, have invented new and useful Improvements in Hose Nozzles, of

which the following', taken in connection with I the accompanying drawings, is a full, clear, and exact description.

This invention relates to the class of hosenozzles in which the water-discharge tube isA the nozzle with a self-tightening packingv which shall be securely retained in position without the use of extra attaching devices, such as collars or followers, screwed onto the piston or internal tube and pressing onto the packing-ring.

My invention thus simplitesthe construction and reduces the cost of manufacturing the nozzle; and to that end the invention consists in the improved construction of paris hereinafter described, and illustrated in the annexed drawings, in which- Figure lis a side view of the water-discharge tube with the inclosing sleeve shown in section; and Fig. 2 is a longitudinal section of said tube and its sleeve, taken `on lineX X in Fig. l.

In the said drawings, a denotes the waterdischarge tube, which is provided with suitable means for securing it to the end of the water-supplying hose. This tube is provided with the usual conical valve o and is inclosed in a snugly-fitting sleeve 0, which is provided in its outer end with the discharge-aperture d and is movable longitudinally on the tube a to cause the valve b to enter to a greater or less extent into the aperture CZ, and vthereby regulate the flow of water from the nozzle.

To properly control the aforesaid movement of the sleeve, I prefer to provide the tube a with a spiral groove e in its exterior, and attached to the sleeve c is a lugf, which engages the said groove and causes the sleeve to move longitudinally when turned on the tube a. The groove is terminated with abrupt cross-walls 0 o to limit the movement of i the sleeve by the abutting of the stud-pin or screw f on the ends of the groove.

This class of nozzles usually leak more or less at the rear end of the sleeve a, as hereinbefore stated. To overcome this defect, I employ a packing which tightens itselfl in accordance with the increase of the pressure of the water entering the nozzle. This packing' consists of a ring or cylindrical band g, of rubber or o ther suitable elastic material, seated in a circumferential groove /L in the exterior of the tube a. The said groove is formed with square shoulders at its ends to serve as abutments for the body.l of the packing-ring, which is thus securely restrained from sliding longitudinally on the tube (t. The packing'- .ring is suiiiciently elastic to allow it to be sprung into the groove. Adjoining the forward end of the said groove is a circumferential depression j', formed in the exterior of the tube, the face of which depression is beveled outwardly to the periphery of the tube for the purpose herein presently explained.

The packing-ring g is formed with a forwardly-extending circumferential flange 2', which surrounds the depression 7' and is beveled interiorly at a greater angle than the face of the depression and terminates in a thin edge, which stands free from the tube to admit water between said edges and side of the tube. The pressure of the admitted water causes the l'iange e' to automatically expand and form a water-tight joint between the tube and its inclosing sleeve c.

What I claim as my invention is In combination with the sleeve provided with the discharge-aperture, the dischargetube provided with an exterior circumferential groove formed with square shoulders -on IOO a greater angle to the periphery of the tube to admit water between the thin edge or' the IO l'lange and side of the tube substantially as set forth and Shown.

FRANK J. CHRISTMAN.

its ends and with n forwmdly-beveled circumferentiel depression extending 'from the 'front Shoulder of said groove to the periphery of the tube, and an elastie packing-ring eonlined 5 between the Shoulders oi' said groove and l'orneed with :in expansible circumferential fitnessesz llange surrounding' the aforesaid beveled de- J. J. LAASS,

pression of the tube and beveled interiorly at FRED WV. HAMMOND. 

